Senior Python Backend Engineer (PostgreSQL & Knowledge Graphs)

Techstack; United States; Remote; USD 120,000 - 180,000; Full time

Benefits offered by this job

Education reimbursement up to 50%

Free English language courses

20 days off + 7 sick days

Legal and accounting support

Appreciation gifts

Job summary

Techstack is building a Governance, Risk, and Compliance platform that uses knowledge graphs to connect risks, controls, assessments and evidence. You’ll build backend services in Python, design data models in PostgreSQL, and work with graph technologies to power auditable compliance workflows.

Join a team that collaborates with enterprise clients, mentors growth, and offers remote-friendly work, education funds, language courses, and generous time off to support professional development.

Qualifications

• 5+ years of commercial experience with Python backend development.
• Strong PostgreSQL skills including schema design, indexing, JSONB, and migrations.
• Experience designing or implementing knowledge graphs and ontologies.
• Experience with graph technologies such as Neo4j, Apache AGE, Cypher/openCypher.
• Strong understanding of REST APIs, backend architecture, and enterprise system integrations.
• Experience with data validation, synchronization, and workflow logic or state machines.
• Ability to work independently and make sound engineering decisions.

Responsibilities

• Develop and maintain backend services using Python and PostgreSQL.
• Design and implement knowledge graphs, ontologies, graph data models, and queries using Neo4j, Apache AGE, or comparable technologies.
• Build data pipelines and synchronization mechanisms for structured compliance data and graph representations.
• Develop integrations with enterprise systems, including CMDB and security assessment platforms.
• Implement APIs, workflow logic, and auditable risk-scoring capabilities.
• Maintain data consistency, validation, security, automated testing, and CI/CD reliability.
• Collaborate with technical stakeholders to translate complex requirements into maintainable backend solutions.

Skills

Python backend

PostgreSQL

Knowledge graphs

Neo4j

Cypher/openCypher

REST APIs

Data validation

Independent problem solving

Tools

Neo4j

Apache AGE

Cypher

Docker

Terraform

FastAPI

Django

OpenAPI

JSON Schema

Pydantic

ServiceNow

CMDB

Rapid7

Job description

About the product

Intro

We’re building a Governance, Risk, and Compliance (GRC) platform that helps organizations manage security risks across business processes, systems, vendors, and data flows.

The platform uses knowledge graphs to connect risks, security controls, assessments, and supporting evidence, enabling more transparent risk analysis and auditable compliance workflows.

You’ll help build the backend services and data models that power these capabilities, working at the intersection of Python engineering, PostgreSQL, and knowledge graph technology.

• Python
• FastAPI
• Django
• Neo4j
• Cypher / openCypher
• Knowledge Graphs
• Pydantic
• JSON Schema
• REST API
• OpenAPI
• OSCAL
• ServiceNow
• CMDB
• Rapid7
• Docker
• Terraform
• CI/CD

Your team

You’ll collaborate closely with the client’s engineering team on backend architecture, data modeling, knowledge graphs, and enterprise integrations. You’ll have direct communication with technical decision-makers and the opportunity to influence key engineering decisions throughout the engagement.

Culture

We are committed to implementing high standards in the technology industry, and it is the fundamental mission of our work. To achieve this goal, the company and all its members are constantly evolving.

Each of us has the opportunity to contribute to the product, the company, the team, the industry, and our personal development. At Techstack, you have the option to choose from various growth opportunities that align with your interests:

• meetups, where you can share your knowledge and develop simultaneously by sharing your experiences within the company and local technical communities;
• roles such as a mentor or a technical lead. In any of these roles, you will assist junior professionals and share your knowledge and experiences with them.
• participation in our technical Guilds, where you can discuss technical solutions, approaches, and industry trends.

All of these elements contribute to shaping the culture and expertise within both our team and the company as a whole.

Your responsibilities

• Develop and maintain backend services using Python and PostgreSQL.
• Design and implement knowledge graphs, ontologies, graph data models, and queries using Neo4j, Apache AGE, or comparable technologies.
• Build data pipelines and synchronization mechanisms for structured compliance data and graph representations.
• Develop integrations with enterprise systems, including CMDB and security assessment platforms.
• Implement APIs, workflow logic, and auditable risk-scoring capabilities.
• Maintain data consistency, validation, security, automated testing, and CI/CD reliability.
• Collaborate with technical stakeholders to translate complex requirements into maintainable backend solutions.

It's about you

• 5+ years of commercial experience in Python backend development.
• Strong hands-on experience with PostgreSQL, including schema design, indexing, JSONB, and database migrations.
• Practical experience designing or implementing knowledge graphs and ontologies.
• Experience with Neo4j, Apache AGE, Cypher/openCypher, or comparable graph technologies.
• Strong understanding of REST APIs, backend architecture, and enterprise system integrations.
• Experience with data validation, synchronization, and workflow logic or state machines.
• Ability to work independently, investigate complex technical problems, and make sound engineering decisions.

What we havefor you

• Stable and long-term position in an experienced team.
• Broad opportunities for professional and career growth, including professional challenges that encourage personal development, meetups, hackathons, professional communities, and more.
• Horizontal connections and the absence of micromanagement foster a collaborative environment in which all team members are accessible to one another for any concerns.
• Hubs in Kharkiv, Kyiv, Lviv, and Wrocław (Poland), or everything necessary for remote work.
• Up to 50% compensation for the cost of educational courses and conferences to support professional development.
• Free English language and business English courses.
• 20 days off and 7 sick days to support your health and well-being.
• Legal and accounting support.
• Appreciation gifts for significant events and occasions.

About us

Techstack is a technology product engineering company that sets an example for high development standards in the IT industry. We empower each team member to influence the development of the product, company, and processes.